When it comes to bitcoin investment there are things that are important to have and one of them are reserved funds, like you said it helps one when there's a dip, when you are using the DCA strategy and you have also built a very good reserved funds it will help you accumulate more Bitcoin than someone who is just using the DCA strategy without any built reserve funds.
Dollar Cost Averaging method invests as much as you can afford i.e. you can start with a small amount even if you don't have a huge amount of cash. Investing does not mean investing all the money you have. One thing is true that we need a certain source of income or funds before investing. Whenever you have a fixed source of income, you can easily meet your needs with the money you earn from it and continue your investments comfortably with the reserve money.
Moreover, reserved funds play an important role in investment. Because if you have enough funds for investment then no matter what happens in the market you will be able to keep your investment active by buying bitcoins regularly.
Yeah that's true reserve funds play important role in bitcoin accumulating, but the main thing one should focus on is building and securing a better bitcoin investment, most time I will tell those that don't have much money to try and have a emergency funds rather than a reserve funds so that they won't endup digging their hands in their investment, during any expenses.
Because having an emergency funds as already prevent you from seeing your bitcoin as your only relying source to handle your expenses, which may help to strengthen your bitcoin investment, because at a that all you will be focusing on is how to accumulate More bitcoin rather than thinking on how to dig your hands in your investment which may endup slowing the growth of tire Bitcoin investment due to regular withdrawing of assets .